package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import lombok.val;
import org.apache.ibatis.annotations.Delete;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //构造分页构造器对象
        Page<Dish> pageInfo=new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage=new Page<>();

        //构造条件构造器
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();

        //添加过滤条件
        queryWrapper.like(name!=null,Dish::getName,name);

        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝,records是集合List,存放基本信息，拷贝除records以外的所有信息如：current,pages,size,total
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list=records.stream().map((item)->{
            DishDto dishDto=new DishDto();
            //拷贝records所有信息（基本信息）如id,name,price,image,description,status,sort,createTime,updateTime,createUser,updateUser,
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//获取分类Id
            //根据Id查询分类对象
            Category category=categoryService.getById(categoryId);
            //获取分类名称,if语句,避免空指针异常
            if (category!=null){
                String categoryName=category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());//转换流，将list转换为流，返回给dishDtoPage，collect(Collectors.toList())将信息转换为集合

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public  R<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }
     /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("修改菜品成功");
    }

    /**
     *  删除菜品
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(String ids){
        log.info("删除菜品，id为：{}",ids);

        dishService.deleteWithFlavor(ids);

        return R.success("分类信息删除成功");
    }

    /**
     * 批量停售
     * @param ids
     * @return
     */
    @PostMapping("/status/0")
    public R<String> nostart(String ids){
        log.info("停售，id为：{}",ids);

        dishService.noStart(ids);
        return R.success("更改成功");
    }

    /**
     * 批量起售
     * @param ids
     * @return
     */
    @PostMapping("/status/1")
     public R<String> start(String ids){
        log.info("起售，id为：{}",ids);

        dishService.start(ids);
        return R.success("更改成功");
    }

    /**
     * 根据条件查询菜品数据
     * @param dish
     * @return
     */
/*    @GetMapping("/list")
    public R<List<Dish>> list(Dish dish){

        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        //添加分类Id条件
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        //添加start状态条件
        queryWrapper.eq(Dish::getStatus,1);

        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list=dishService.list(queryWrapper);

        return R.success(list);
    }*/

    /**
     * 根据条件查询菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){

        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        //添加分类Id条件
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        //添加start状态条件
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list=dishService.list(queryWrapper);
        
        List<DishDto> dishDtoList=list.stream().map((item)->{
            DishDto dishDto=new DishDto();
            //拷贝records等所有信息
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//获取分类Id
            //根据Id查询分类对象
            Category category=categoryService.getById(categoryId);
            //获取分类名称,if语句,避免空指针异常
            if (category!=null){
                String categoryName=category.getName();
                dishDto.setCategoryName(categoryName);
            }
            //当前菜品的id
            Long dishId=item.getId();
            LambdaQueryWrapper<DishFlavor> queryWrapper1=new LambdaQueryWrapper<>();
            queryWrapper1.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavors = dishFlavorService.list(queryWrapper1);
            //将口味信息存入dishDto
            dishDto.setFlavors(dishFlavors);
            return dishDto;
        }).collect(Collectors.toList());//转换流，将list转换为流，返回给dishDtoList，collect(Collectors.toList())将信息转换为集合


        return R.success(dishDtoList);
    }


}
